Publication

Cast On-Site UHPFRC for the Rehabilitation of Existing Structures – Feedback Over 20 Years of Exposure to Chlorides

Emmanuel Denarié
2024

Abstract

The first cast on-site application of Strain Hardening Ultra-High-Performance Fiber Reinforced Concrete (UHPFRC) in Switzerland took place for the rehabilitation and widening of the Bridge over the river “La Morge” near the town of Sion in the Swiss Alps in 2004 in the framework of the EU project SAMARIS. Over the last 20 years, this technology has been successfully applied in Switzerland for bridges and buildings under the impulse of MCS/EPFL and is now in practice with over 400 applications. An experimental campaign and a detailed visual survey were performed after 19.5 years of exposure to de-icing salts in spring 2024 to characterise chloride penetration in various parts of the bridge and validate the entire surface waterproofing function of the UHPFRC overlay. This is the first time that the performances of cast-on-site UHPFRC without thermal treatment have been investigated over such a long period.

Official source

https://infoscience.epfl.ch/entities/publication/4e663108-0901-4315-a20a-5c0005d6620f

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Emmanuel Denarié
2024

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/4e663108-0901-4315-a20a-5c0005d6620f

About this result

Related concepts (18)

Swiss Alps

The Alpine region of Switzerland, conventionally referred to as the Swiss Alps (Schweizer Alpen, Alpes suisses, Alpi svizzere, Alps svizras), represents a major natural feature of the country and is, along with the Swiss Plateau and the Swiss portion of the Jura Mountains, one of its three main physiographic regions. The Swiss Alps extend over both the Western Alps and the Eastern Alps, encompassing an area sometimes called Central Alps.

Alps

The Alps (ælps) are the highest and most extensive mountain range that is entirely in Europe, stretching approximately across eight Alpine countries (from west to east): Monaco, France, Switzerland, Italy, Liechtenstein, Germany, Slovenia, and Austria. The Alpine arch extends from Nice on the western Mediterranean to Trieste on the Adriatic and Vienna at the beginning of the Pannonian Basin. The mountains were formed over tens of millions of years as the African and Eurasian tectonic plates collided.

Morges

Morges (mɔʁʒ; Morgiis, plural, probably ablative, else dative; Môrges) is a municipality in the Swiss canton of Vaud and the seat of the district of Morges. It is located on Lake Geneva. Morges is first mentioned in 1288 as Morgia. It was known by its German name Morsee though that name is no longer used. There were several prehistoric settlements along what is now the Morges lakefront. The largest and best known, Grande-Cité, was occupied in the late Bronze Age. One of the wooden objects at Grande-Cité has been dendrochronologically dated to 1031 BC.

Related publications (1)

Cast On-Site UHPFRC for the Rehabilitation of Existing Structures – Feedback Over 20 Years of Exposure to Chlorides

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Chloride penetration model considering the microclimate